QUESTION
Sanjeev borrows Rs 25000 at 8% per annum for 3 years. At the end of 3 years, he pays Rs 19000 and a video camera. What is the value of the video camera?
ANSWER
P= 25000
R= 8%
T = 3
I = PRT/100
I = ( 25000×8×3) ÷ 100
I = 6000
A = P + I
=25000+ 6000
=31000
After 3 years he pay 19000+ video camera
Value of the camera = 31000- 19000
=12000
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QUESTION
Amir buys 40balls for Rs. 2000. He sells 15 of these at a profit of 20%. He sells the remaining for Rs 40 each. What is the total gain % or loss%?
ANSWER
Amir buys 40 balls for Rs. 2000
Therefore, Cost of 1 ball = 2000/40 =50
He sells 15 balls for the profit=20%
Let Original price be 100
Profit be 20 % for the ball
= 100+ 20=120
Therefore selling price of 1 ball for profit
=(120/100)*50
= Rs. 60
Selling price of 15 ball = 60* 15
=900
He sells remaining ball for 40 each,
Remaining balls = 40-15=25
The S.P of remaining balls= 25*40
= 1000
Therefore total selling price of 40 balls
= Rs.(1000+900)
=Rs.1900
Here cost price of 40 balls is greater than selling price. Therefore it is a loss.
Loss = 2000-1900
= 100
Loss % =( 100/2000) *100
=5 %
QUESTION
Sarika purchased 45 dozens of pens for Rs 3510. She sells 20 dozens at a profit of 15% and the remaining for 10% loss. What is her total loss% or profit %?
ANSWER
Cost price of 40 dozens of pen =Rs 3510
Cost price of 1 dozen of pen= 3510/45
=78
Therefore C. P of 20 dozens of pen= 20*78
=1560
Profit of 20 dozens of pen is 15%
Let original price be 100
Profit of 15 % = 100+15
= 115
Therefore selling price of 20 dozens of pen
= (115/100)*1560
=1794
Cost price of remaining dozens of pen,
( i. e, 45-20=25)
=25*78
=1950
Loss of 25 dozen is 10 %
Let original price be 100
Loss of 10 %= 100-10
= 90
Therefore selling price of 25 dozens of pen
= (90/100)*1950
=1755
Therefore Total S. P= 1794+1755
=3549
So here S. P< C. P
Loss= 3549 -3510
=39
Loss % =( 39/3510)*100
= 1.11 %
QUESTION
Anjali borrow Rs. 19000 at 6 % for 2 years. At the end of 2 years, she pays Rs. 15000 and a gold ring to the money lender. What is the value of the gold ring?
ANSWER
Principal =19000
Rate = 6%
Year, T = 2
Interest, I = PRT /100
= 19000 * 6* 2
= 228000/ 100
= 2280
Amount, A = principal + Interest
= 19000 + 2280
= 21280
Anjali has to pay amount of 21280 but she only pays 15000 and a gold ring
So the price of the gold ring will be
= 21280 - 15000
=6280
QUESTION
Heena bought two fans for Rs. 1200 each. She sold one at a loss of 5% and the other at a profit of 10 % . Find the selling price of each. Also find out the total profit or loss?
ANSWER
Overall C.P of each fan = Rs.1200
One is sold at a loss of 5 %.
This means if C.P is 100 then S.P is Rs 95.
Therefore ,when C. P is 1200,then S.P =Rs( 95/100 )*1200
Also second fan is sold at a profit of 10%,\
It means , if C.P is Rs.100, S.P is Rs 110
Therefore , when C.P is Rs 1200 , then S.P =( 110/100) *1200
Total C.P = Rs .1200 + Rs.1200 = Rs 2400
Total S.P = Rs. 1140 + Rs. 1320 = Rs .2460
Since total S.P > total C.P , a profit of Rs. (2460 -2400)
= Rs 60 has been made
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